LOL! 'To be clear'...
They included the OpenGLES drivers they got from Imagination and the only bundled application that can benefit from is glmark2-es2 (not so surprisingly). Don't forget to adjust HDMI resolution to the lowest possible value otherwise benchmark scores don't look that good any more. And feel free to post your experiences when you try out 'chromium-browser --use-gl=egl' for example (every result is valid, either the error messages you get or missing acceleration)
Hey, and think positive!